Charge pattern development with stream of oppositely charged...

Details Charge pattern development with stream of oppositely charged... Charge pattern development with stream of oppositely charged...

G - Physics

03

G

32/12.13, 117/3.

G03G 13/10 (2006.01) G03G 15/10 (2006.01)

Patent

CA 1061654

ABSTRACT OF THE DISCLOSURE A simple and inexpesive method and apparatus for mark- ing with a liquid that overcomes many of the disadvantages of the prior art and produces images of high resolution and good density on an imaging surface with a minimum of electronic or mechanical mechanisms is provided. A stream of charged droplets of regular size and spacing and having a charge polar- ity opposite to that of the charge pattern to be developed on a moving arcuate imaging surface is produced and is in a path that is substantially tangential to the imaging surface so that the drops pass within less than about 0.020 inches of the surface. An alternating voltage is applied to deflecting electrodes on opposite sides of the stream. The drops are deflected in a plane parallel with the imaging surface and have sufficient charge to be drawn to the imaging surface by the charge pattern thereon.

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